WO2004090028A1 - 水添共重合体を含有するポリマー発泡体 - Google Patents
水添共重合体を含有するポリマー発泡体 Download PDFInfo
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- WO2004090028A1 WO2004090028A1 PCT/JP2004/005114 JP2004005114W WO2004090028A1 WO 2004090028 A1 WO2004090028 A1 WO 2004090028A1 JP 2004005114 W JP2004005114 W JP 2004005114W WO 2004090028 A1 WO2004090028 A1 WO 2004090028A1
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- Prior art keywords
- copolymer
- polymer
- group
- weight
- hydrogenated copolymer
- Prior art date
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- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
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- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 1
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- FBBATURSCRIBHN-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyldisulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSCCC[Si](OCC)(OCC)OCC FBBATURSCRIBHN-UHFFFAOYSA-N 0.000 description 1
- VTHOKNTVYKTUPI-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyltetrasulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSSSCCC[Si](OCC)(OCC)OCC VTHOKNTVYKTUPI-UHFFFAOYSA-N 0.000 description 1
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F297/00—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
- C08F297/02—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type
- C08F297/04—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type polymerising vinyl aromatic monomers and conjugated dienes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/04—Reduction, e.g. hydrogenation
-
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- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Ethene-propene or ethene-propene-diene copolymers
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- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/08—Copolymers of styrene
- C08L25/10—Copolymers of styrene with conjugated dienes
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- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
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- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
- C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
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- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
Definitions
- the present invention relates to a polymer foam containing a hydrogenated copolymer. More specifically, the present invention relates to a polymer foam having a specific gravity of 0.05 to 0.5, comprising a plurality of cells defined by cell walls constituting a polymer matrix.
- a non-hydrogenated copolymer comprising a vinyl aromatic monomer unit and a conjugated gen monomer unit, wherein the polymer matrix is conjugated with the vinyl aromatic monomer unit.
- a hydrogenated copolymer (A) obtained by hydrogenating a non-hydrogenated copolymer containing at least one S, an olefin-based polymer and a rubbery polymer At least one polymer selected from the group consisting of 95 to 0 parts by weight of the polymer (B), and the vinyl aromatic monomer unit in the hydrogenated copolymer (A) is included. The content is more than 40% by weight and not more than 60% by weight. In the dynamic viscoelastic spectrum obtained for the hydrogenated copolymer (A), the loss tangent (tan ⁇ 5) is obtained.
- the polymer foam of the present invention has flexibility, low-temperature properties (such as low-temperature flexibility), impact absorption (low resistance). Because of its excellent elasticity and compression set resistance, it can be advantageously used as a shock absorber (especially footwear material).
- Conventional technology such as low-temperatur
- a block copolymer composed of a vinyl aromatic monomer unit and a conjugated diene monomer unit is vulcanized without vulcanization when the content of the vinyl aromatic monomer unit is relatively small. It has the same elasticity at room temperature as natural rubber and synthetic rubber, and at high temperatures has the same workability as thermoplastic resin, so footwear, plastic modification, asphalt modification, and adhesiveness Widely used in the field of dressing.
- the content of the vinyl aromatic monomer unit is relatively large, it becomes a transparent and highly impact-resistant thermoplastic resin, so that it can be used in food packaging containers, household products, home appliances and industrial products. It is used for packaging materials for parts and toys.
- the hydrogenated product of the above-mentioned block copolymer is excellent in weather resistance and heat resistance, so that it is widely used in automotive parts and medical instruments in addition to the above-mentioned application fields.
- the above-mentioned block copolymer has a drawback that the flexibility is good, but the shock absorption is poor, so that the use of the block copolymer is disadvantageous. It is a constraint on further expansion.
- the content of Bier aromatic monomer units is relatively large, there is a drawback that the flexibility at room temperature and low temperature is inferior, and it is not suitable for use as a soft material. Appropriate.
- the copolymer is composed of a monomer unit and a vinyl aromatic monomer unit content of 3 to 50% by weight, and has a molecular weight distribution (however, the molecular weight distribution means a weight average molecular weight (Mw)
- Mw weight average molecular weight
- the ratio (Mw / Mn) to the number average molecular weight (Mn) is 10 or less, and the vinyl bond amount of the conjugated gen moiety in the copolymer is 10 to 90%.
- a composition containing a hydrogenated copolymer obtained by hydrogenating a copolymer and a polypropylene resin is disclosed. However, although this composition has some improvement in flexibility and low temperature properties, it does not have sufficient shock absorption.
- Japanese Patent Application Laid-Open No. 6-287365 discloses a copolymer comprising a vinyl aromatic monomer unit and a conjugated diene monomer unit.
- a hydrogenated copolymer obtained by hydrogenating a copolymer having a unit content of 5 to 60% by weight and having a vinyl bond content of not less than 60% in a conjugated gen moiety in the copolymer.
- a composition comprising a polymer and a polypropylene resin is disclosed. However, this composition does not have sufficient flexibility and impact absorption.
- attempts have been made to develop flexibility in block copolymers containing vinyl aromatic monomer units and conjugated gen monomer units, which have a relatively high content of vinyl aromatic monomer units. Has been implemented.
- Japanese Unexamined Patent Publication No. Hei 2 (1999) -250 describes that a homopolymer block composed of a Pier aromatic monomer unit and a homopolymer block composed of a conjugated diene monomer unit are disclosed.
- the homopolymer block comprising a conjugated diene monomer unit is an isoprene monomer unit alone, or an isoprene monomer unit and a butadiene monomer
- a block copolymer characterized in that at least one peak of a loss tangent (ta ⁇ ) exists in a range of 0 ° C or more.
- this block copolymer has excellent shock absorption, but does not have sufficient flexibility and low-temperature properties.
- W98971224 contains a polymer block mainly composed of styrene monomer units and a copolymer block mainly composed of butadiene monomer units and styrene monomer units. And a molding material containing a hydrogenated block copolymer obtained by hydrogenating a block copolymer containing the same as a main component.
- the hydrogenated copolymer described in this patent document has insufficient flexibility and low-temperature characteristics.
- the present inventors have developed a molded article comprising a hydrogenated copolymer, which is excellent in all of flexibility, low-temperature characteristics (such as flexibility at low temperatures) and shock absorption. To this end, we worked diligently. As a result, the present inventors have found that such a molded article contains a plurality of cells defined by the cell walls constituting the polymer matrix, and has a specific gravity of 0.05 to 0.5.
- a polymer foam wherein the polymer matrix is a non-hydrogenated copolymer containing a vinyl aromatic monomer unit and a conjugated diene monomer unit, wherein the vinyl aromatic monomer is Hydrogenated copolymer (A) obtained by hydrogenating a non-hydrogenated copolymer containing at least one copolymer block S consisting of a monomer unit and a conjugated From 100 to 100 parts by weight, and at least 95 to 0 parts by weight of at least one polymer (B) selected from the group consisting of an olefin polymer and a rubbery polymer.
- A Hydrogenated copolymer obtained by hydrogenating a non-hydrogenated copolymer containing at least one copolymer block S consisting of a monomer unit and a conjugated From 100 to 100 parts by weight, and at least 95 to 0 parts by weight of at least one polymer (B) selected from the group consisting of an olefin polymer and a rubbery polymer.
- Vinyl in the hydrogenated copolymer (A) The content of the aromatic monomer unit is in the range of more than 40% by weight and not more than 60% by weight, and in the dynamic viscoelastic spectrum obtained for the hydrogenated copolymer (A), the loss is Surprisingly, it is realized by a polymer foam characterized in that at least one peak of the tangent (tand) is present in the range of 40 ° C or more and below -10 ° C. I learned. Furthermore, the present inventors have found that such a polymer foam has excellent compression set resistance and the like. The present invention has been completed based on these findings.
- one object of the present invention is to provide a polymer foam having excellent flexibility, low-temperature properties (such as low-temperature flexibility), shock absorption (low rebound resilience), and compression set resistance. And there.
- a polymer foam comprising a plurality of cells defined by cell walls constituting a polymer matrix
- the polymer matrix is:
- the hydrogenated copolymer (A) has the following properties (1) and (2):
- the content of the vinyl aromatic monomer unit is more than 40% by weight and 60% by weight or less based on the weight of the hydrogenated copolymer (A).
- the peak of the loss tangent (ta ⁇ ⁇ ) is less than 140 ° C. and less than 110 ° C. Have one, have,
- the polymer foam having a specific gravity of 0.05 to 0.5.
- a polymer foam comprising a plurality of cells, wherein the polymer matrix comprises-.
- the hydrogenated copolymer (A) obtained by hydrogenating a non-hydrogenated copolymer containing at least one component S is added to a total of 100 parts by weight of the component (A) and the component (B). 5 to 100 parts by weight, and
- At least one polymer (B) selected from the group consisting of an olefin-based polymer other than the hydrogenated copolymer (A) and a rubbery polymer other than the hydrogenated copolymer (A) And 95 to 0 parts by weight based on a total of 100 parts by weight of the component (A) and the component (B),
- the hydrogenated copolymer (A) has the following properties (1) and (2): (1)
- the content of the vinyl aromatic monomer unit is based on the weight of the hydrogenated copolymer (A). On the other hand, it is more than 40% by weight and not more than 60% by weight,
- the loss tangent (the peak of tan (5) is in the range of 140 ° C or more and less than 110 ° C At least one exists in
- the content of the hydrogenated copolymer (A) and the content of the polymer (B) were 5 parts by weight, respectively, based on 100 parts by weight of the components (A) and (B). 2.
- the at least one copolymer block is in the range of _50 to 100 ° C. 3.
- the non-hydrogenated copolymer further contains a homopolymer block H consisting of a pinyl aromatic monomer unit, and the homopolymer block H in the non-hydrogenated copolymer Wherein the content of is from 1 to 40% by weight based on the weight of the non-hydrogenated copolymer.
- the polymer foam according to any one of 1 to 4. 0
- the non-hydrogenated copolymer is characterized in that it is at least one polymer selected from the group consisting of copolymers represented by the following formulas (1) to (11).
- the foamed foam according to any one of items 1 to 3 above.
- each S independently represents a copolymer block composed of the vinyl aromatic monomer unit and the conjugated diene monomer unit, and each H represents an independent block.
- each E independently represents a homopolymer block of a conjugated gen monomer unit
- each X represents Each independently represents a capping agent residue
- each m independently represents an integer of 2 or more
- n and p each independently represent 1 or more Represents an integer.
- the modifying agent is a primary modifying agent having at least one functional group selected from the group consisting of a hydroxyl group, an epoxy group, an amino group, a silanol group, and an alkoxysilane group.
- the modifying agent comprises a primary modifying agent and a secondary modifying agent bound to the primary modifying agent;
- the primary modifier has at least one functional group selected from the group consisting of a hydroxyl group, an epoxy group, an amino group, a silanol group, and an alkoxysilane group;
- the secondary modifier has at least one functional group selected from the group consisting of a hydroxyl group, a propyloxyl group, an acid anhydride group, an isocyanate group, an epoxy group, and an alkoxysilane group.
- the 0-component (B) as the union of the oligomeric system is a polyethylene, an ethylene-propylene copolymer, or an ethylene-propylene.
- the rubbery polymer as the component (B) is composed of 1,2-polybutadiene, a hydrogenated product of a conjugated homopolymer, a vinyl aromatic monomer unit and a conjugated monomer unit. And a hydrogenated product thereof; a homopolymer block composed of a vinyl aromatic monomer unit, and a homopolymer block composed of a conjugated diene monomer unit and a vinyl aromatic monomer.
- polymer foam as described in any one of (1) to (9) above, wherein the polymer foam is at least one member selected from the group consisting of (EPDM), butyl rubber, and natural rubber.
- the rubbery polymer as the component (B) is a vinyl aromatic A hydrogen additive of a copolymer comprising a monomer unit and a conjugated diene monomer unit, wherein the content of the vinyl aromatic monomer unit exceeds 60% by weight based on the weight of the hydrogenated product. 90% by weight or less of a hydrogenated product; and a homopolymer block composed of a vinyl aromatic monomer unit, and a homopolymer block composed of a conjugated diene monomer unit and a vinyl aromatic block.
- each monomer unit constituting the polymer is in accordance with the naming of the monomer from which the monomer unit is derived.
- “Vinyl aromatic monomer unit” means a structural unit of a polymer obtained by polymerizing a vinyl aromatic compound as a monomer, and its structure is composed of a substituted ethylene group derived from a substituted vinyl group. This is a molecular structure in which one carbon is a binding site.
- the “co-gene monomer unit” means a structural unit of a polymer obtained by polymerizing conjugated gen which is a monomer, and its structure is derived from a conjugated gen monomer. This is a molecular structure in which two carbons are the binding sites.
- the polymer foam of the present invention comprises a plurality of cells (cels) defined by cell walls constituting a polymer matrix.
- cells There is no particular limitation on the structure of the bubbles.
- all the cells may be open cells (open cel ls) or all the cells may be closed cells (close cel ls).
- open cells and closed cells may be mixed. That is, the polymer foam of the present invention may have an open cell cellular structure or a closed cell structure.
- closed cell cellular structure may have both an open cell structure and a closed cell structure.
- the polymer matrix comprises a hydrogenated copolymer (A) as a component.
- the hydrogenated copolymer (A) is obtained by hydrogenating a non-hydrogenated copolymer containing a vinyl aromatic monomer unit and a conjugated diene monomer unit.
- the non-hydrogenated copolymer contains at least one copolymer block S composed of a vinyl aromatic monomer unit and a conjugated gen monomer unit. (Hereinafter, this non-hydrogenated copolymer is often referred to as "base non-hydrogenated copolymer”.)
- the hydrogenated copolymer (A) has the following properties (1) and (2): (1) The content of the vinyl aromatic monomer unit is based on the weight of the hydrogenated copolymer (A). And more than 40% by weight and not more than 60% by weight,
- the peak of the loss tangent (ta ⁇ ⁇ ) is in the range of ⁇ 40 ° C. or more and ⁇ 10 ° C. or less. Has at least one.
- the above characteristic (1) will be described.
- the content of the vinyl aromatic monomer unit in the hydrogenated copolymer (A) is determined based on the content of the hydrogenated copolymer.
- the content of the vinyl aromatic monomer unit is preferably 43 to 57% by weight in terms of flexibility and impact absorption, and more preferably 45 to 5511%. %.
- the content of vinyl aromatic monomer units in the hydrogenated copolymer (A) The prevalence is almost equal to the content of Bier aromatic monomer units in the base non-hydrogenated copolymer, so that the content of vinyl aromatic monomer units in the hydrogenated copolymer (A) is Is determined as the content of the base non-hydrogenated copolymer.
- the content of the vinyl aromatic monomer unit with respect to the hydrogenated copolymer (A) is measured using a base non-hydrogenated copolymer as a sample and using an ultraviolet spectrophotometer.
- the peak of the loss tangent present in the temperature range of 40 ° C or higher and lower than 110 ° C is composed of vinyl aromatic monomer units and conjugated gen monomer units in the base non-hydrogenated copolymer. This is a peak due to the hydrogenated copolymer block obtained by hydrogenating the copolymer block. Loss tangent peaks in the range of ⁇ 40 ° C or higher, but less than ⁇ 10 ° C
- the base non-hydrogenated copolymer contains at least one copolymer block S composed of a vinyl aromatic monomer unit and a conjugated diene monomer unit.
- the weight ratio of the conjugated diene monomer unit and the Z vinyl aromatic monomer unit in the copolymer block S is not particularly limited. However, considering that at least one peak of the loss tangent needs to be in the range of ⁇ 40 ° C. or more and less than 110 ° C. as described above, the copolymer is considered.
- the weight ratio of the conjugated diene monomer unit to the vinyl aromatic monomer unit in the block S is preferably 50/50 to 90/10, and more preferably 534.7 to 80/20. Particularly preferably, it is 5644 to 75/25.
- substantially no peak means that no peak due to crystallization of the hydrogenated co-reactive coalescence block appears or a peak due to crystallization is observed in this temperature range.
- the vinyl aromatic monomer units may be distributed uniformly or in a tapered manner. Further, in the copolymer block S, a plurality of portions where vinyl aromatic monomer units are uniformly distributed and a plurality of portions where the vinyl aromatic monomer units are uniformly distributed in a Z or taper shape may be present together. In the copolymer block S, a plurality of segments having different vinyl aromatic monomer unit contents may coexist.
- the expression that the vinyl aromatic monomer units are distributed in a tapered shape means that the content of the vinyl aromatic monomer units gradually increases or decreases along the length direction of the block chain.
- the base non-hydrogenated copolymer preferably contains a homopolymer block H of a vinyl aromatic monomer unit.
- the content of the homopolymer block H is preferably 40% by weight or less based on the hydrogenated copolymer (A) from the viewpoints of flexibility and impact absorption. It is more preferably from 1 to 40% by weight, further preferably from 5 to 35% by weight, still more preferably from 10 to 30% by weight, particularly preferably from 13 to 25% by weight.
- the content of the monomerized block of vinyl aromatic monomer units (hereinafter often referred to as “vinyl aromatic polymer block”) in the base non-hydrogenated copolymer is determined by adding osmium tetroxide.
- the weight of the vinyl aromatic polymer block component (often referred to as the “osmium tetroxide decomposition method”) (however, the vinyl aromatic polymer block component having a degree of polymerization of about 30 or less is excluded. Is obtained from the following equation.
- NMR method (Weight of vinyl aromatic polymer block component in base non-hydrogenated copolymer Z weight of base non-hydrogenated copolymer) XI 00.
- the content of the vinyl aromatic polymer block can be directly measured using a hydrogenated copolymer (A) as a sample and using a nuclear magnetic resonance apparatus (NMR) (Y. Tanaka, eta 1., RUBBERCHEMISTRY and TECHNOLOGY 54, 685 (1981); hereinafter referred to as "NMR method").
- NMR method nuclear magnetic resonance apparatus
- the content of the vinyl aromatic polymer block (referred to as “ ⁇ s value”) determined by the osmium tetroxide decomposition method and the content of the vinyl aromatic polymer block determined by the NMR method were determined. There is a correlation between the content (referred to as “N s value”). As a result of investigations using various copolymers by the inventors, the relationship is expressed by the following equation. I understood. Os value -0.012 (Ns value) 2 +1.8 (Ns value) 13.0 Therefore, in the present invention, the vinyl aromatic polymer block to the hydrogenated copolymer is obtained by the NMR method. When the content (N s value) is determined, the N s value is converted to the O s value based on the above formula.
- a copolymer block comprising at least one copolymer block S comprising a vinyl aromatic monomer unit and a conjugated diene monomer unit.
- the hydrogenated copolymer (A) obtained by hydrogenating the hydrogenated copolymer has the above properties.
- Examples of the base non-hydrogenated copolymer include a copolymer having a structure represented by the following formula.
- each S independently represents a copolymer block comprising the vinyl aromatic monomer unit and the conjugated diene monomer unit.
- Each H independently represents a homopolymer block of a butyl aromatic monomer unit, and each E independently represents a homopolymer block of a conjugated gen monomer unit.
- Each X independently represents a coupling agent residue or a polyfunctional initiator residue, and each m independently represents an integer of 2 or more, preferably an integer of 2 to 10.
- n and p each independently represent an integer of 1 or more, preferably 1 to 10. Examples of the above-mentioned coupling agent residues include the residues of the below-described coupling agent.
- Examples of the above polyfunctional initiator residues include the reaction product of diisopropenylbenzene with sec-butyllithium, and the reaction product of divinylbenzene with sec-butyllithium and a small amount of 1,3-butadiene. Reaction products can be mentioned.
- At least one non-hydrogenated copolymer selected from the group consisting of copolymers represented by the following formulas (1) to (11). is there.
- the weight average molecular weight of the hydrogenated copolymer (A) is not particularly limited. However, it is preferably at least 60,000 from the viewpoint of mechanical strength such as tensile strength and compression set resistance of the polymer foam, and preferably at most 100,000 from the viewpoint of moldability.
- the weight average molecular weight of the hydrogenated copolymer (A) is more preferably more than 100,000 and not more than 800,000, particularly preferably 130000 to 500,000.
- the molecular weight distribution of the hydrogenated copolymer (A) is preferably from 1.05 to 6. From the viewpoint of molding workability, it is more preferably from 1.1 to 6, further preferably from 1.2 to 5, and particularly preferably from 1.4 to 4.5.
- the weight average molecular weight of the hydrogenated copolymer is almost equal to the weight average molecular weight of the base non-hydrogenated copolymer, the weight average molecular weight of the hydrogenated copolymer is obtained as the weight average molecular weight of the base non-hydrogenated copolymer ⁇ You.
- the weight-average molecular weight of the base non-hydrogenated copolymer is determined using a calibration curve obtained for a commercially available standard monodisperse polystyrene having a known molecular weight. Determine by gel permeation chromatography (GPC).
- the number average molecular weight of the hydrogenated copolymer is determined in the same manner.
- the molecular weight distribution is calculated as the ratio (MwZMn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn).
- the hydrogenation rate of the double bond of the conjugated gen monomer unit in the hydrogenated copolymer (A) is not particularly limited. However, in view of the mechanical strength and compression set resistance of the foam, the hydrogenation rate of the double bond of the conjugated diene monomer unit is usually 70% or more, preferably 80% or more, and It is preferably at least 85%, particularly preferably at least 90%.
- the hydrogenation ratio of the hydrogenated copolymer is measured using a nuclear magnetic resonance apparatus (NMR).
- microstructure (ratio of cis, trans, and vinyl) of the conjugated diene monomer unit in the base non-hydrogenated copolymer can be arbitrarily changed by using a polar compound described below.
- the vinyl bond amount of the conjugated gen monomer unit in the copolymer block comprising the vinyl aromatic monomer unit and the conjugated gen monomer unit in the base non-hydrogenated copolymer is determined. Is not particularly limited, but is preferably 5% or more and less than 40% (hereinafter, the total amount of 1,2 — vinyl bond and 3,4 — vinyl bond (When 1,3-butadiene is used, the 1,2-vinyl bond amount is simply referred to as the Bier bond amount. Low rebound resilience, handleability (blocking resistance) From the viewpoint, the vinyl bond content is more preferably from 5 to 35%, further preferably from 8 to 30%, and particularly preferably from 10 to 25%.
- blocking resistance refers to the adhesion of a resin molded product that has been stacked or wrapped around a resin film and left unattended for a prolonged period of time. Resistance to elephants (blocking). The amount of vinyl bond is measured using an infrared spectrophotometer.
- a conjugated diene is a diolefin having a pair of conjugated double bonds.
- Examples of conjugated gens used in base non-hydrogenated copolymers are 1,3-butadiene, 2-methyl-1,3-butadiene (isoprene), 2,3-dimethyl-1,3-butadiene, 1,3-pentadiene , 2-methyl-1,3-pentagen, and 13-hexadiene. Of these, 1,3-butene and isoprene are preferred. These may be used alone or in combination of two or more.
- vinyl aromatic compound used for the base non-hydrogenated copolymer examples include styrene, -methylstyrene, p-methylstyrene, divinylbenzene, 1,1-diphenylethylene, N, N-dimethyl-p-aminoethylstyrene, N, N-dimethyl-p-aminoethylstyrene. Of these, styrene is preferred. These may be used alone or in combination of two or more.
- the method for producing the base non-hydrogenated copolymer will be described.
- Bei The method for producing the non-hydrogenated copolymer is not particularly limited, and a known method can be used. For example, it can be produced by anion living polymerization using an initiator such as an organic alkali metal compound in a hydrocarbon solvent.
- hydrocarbon solvents examples include aliphatic hydrocarbons such as n-butane, isobutane, n-pentane, n-hexane, n-heptane, n-octane; cyclopentane, cyclopentane Alicyclic hydrocarbons such as rohexane, cycloheptane and methylcycloheptane; and aromatic hydrocarbons such as benzene, toluene, xylene and ethylbenzene.
- aliphatic hydrocarbons such as n-butane, isobutane, n-pentane, n-hexane, n-heptane, n-octane
- cyclopentane cyclopentane
- Alicyclic hydrocarbons such as rohexane, cycloheptane and methylcycloheptane
- aromatic hydrocarbons such as benzen
- polymerization initiator examples include aliphatic hydrocarbon alkali metal compounds, aromatic hydrocarbon alkali metal compounds, and organic amines having anionic polymerization activity on conjugated diene monomers and vinyl aromatic monomers.
- Alkali metal compounds and the like Specifically, n-propyllithium, n-butyllithium, sec-butyllithium, tert-butyllithium, the reaction product of diisopropenylbenzene and sec-butyllithium, and divinylbenzene and sec-butyllithium Examples include the reaction product of butyllithium with a small amount of 1,3-butadiene. Further, it is disclosed in U.S. Patent No. 5,708,092, British Patent No. 2,241,239, U.S. Patent No. 5,527,753, etc. Alkali compounds can also be used.
- an organic alkali metal compound is referred to as a polymerization initiator.
- a conjugated diene monomer and a vinyl aromatic monomer are copolymerized, a vinyl bond (1,2-vinyl bond or 3,4
- a tertiary amine compound or an ether compound can be added as a vinyl content regulator in order to increase the content of —pier bond).
- the tertiary amine compound include those represented by the formula R 1 R 2 R 3 N (where 1, R 2 and R 3 are a hydrocarbon group having 1 to 20 carbon atoms or a hydrocarbon group having a tertiary amino group). Which is a group).
- Examples of the ether compound include a linear ether compound and a cyclic ether compound.
- Examples of linear ether compounds include dimethyl ether, getyl ether, diphenyl ether; dialkyl ether compounds of ethylene daryl, such as ethylene glycol dimethyl ether, ethylene glycol getyl ether, and ethylene daryl dibutyl ether; Diethylene glycol dimethyl ether, And dialkyl ether compounds of diethylene daricol, such as glycol dimethyl ether and diethylene glycol dibutyl ether.
- cyclic ether compounds include tetrahydrofuran, dioxane, 2,5-dimethyl-2-oxolane, 2,2,5,5-tetramethyloxolane 2,2-bis (2-year-old xolanil) propane And alkyl ethers of furfurylyl alcohol.
- a polymerization method for obtaining a base non-hydrogenated copolymer using an organic alkali metal compound as a polymerization initiator may be notch polymerization, continuous polymerization, or A combination of these may be used.
- the polymerization temperature is usually from 0 to 180 ° C, preferably from 30 to 150 ° C.
- the time required for the polymerization depends on other conditions, but is usually within 48 hours, preferably 0.1 to 10 hours.
- the atmosphere of the polymerization system is preferably an inert gas atmosphere such as nitrogen gas.
- the polymerization pressure is not particularly limited as long as it is within a pressure range sufficient to maintain the monomer and the solvent in the liquid phase in the above-mentioned polymerization temperature range. Furthermore, it is necessary to keep in mind that impurities that inactivate the catalyst and the living polymer, for example, water, oxygen, carbon dioxide, etc., do not enter the polymerization system.
- a coupling reaction may be carried out by adding a bifunctional or more functional coupling agent.
- the bifunctional or higher functional coupling agent is not particularly limited. A known one can be used.
- difunctional coupling agents include dihalogen compounds such as dimethyldichlorosilane and dimethyldibutene; acid esters such as methyl benzoate, ethyl benzoate, phenyl benzoate and phthalate esters. No.
- a hydrogenated copolymer (A) By hydrogenating the non-hydrogenated copolymer produced by the above method, a hydrogenated copolymer (A) is obtained.
- the hydrogenation catalyst is not particularly limited, and a known hydrogenation catalyst can be used. The following are examples of hydrogenation catalysts.
- chiller-type hydrogenation catalyst using an organic acid salt such as Ni, Co, Fe, or Cr, or a transition metal salt such as acetylacetonate together with a reducing agent such as organic aluminum.
- Homogeneous hydrogenation catalysts such as so-called organometallic complexes such as organometallic compounds such as Ti, Ru, Rh and Zr.
- Specific hydrogenation catalysts are described in Japanese Patent Publication No. 63-4841, Japanese Patent Publication No. 1-5 3851, and Japanese Patent Publication No. 2-90441.
- the hydrogenation catalysts described can be used.
- Examples of preferred hydrogenation catalysts include titanocene compounds and mixtures of titanocene compounds with reducing organometallic compounds.
- the titanocene compound the compounds described in Japanese Patent Application Laid-Open No. Hei 8-10992 can be used. Specifically, bis (cyclohexyl) benzene, indenyl skeleton, or fluorenyl, (replacement) such as bis (methyl) pentagenyl titanium dichloride, monopentamethylcyclopentene genyl titanyl chloride, etc. Compounds having at least one ligand having a skeleton are exemplified. Examples of the reducing organic metal compound include an organic alkali metal compound such as organic lithium, an organic magnesium compound, an organic aluminum compound, an organic boron compound, and an organic zinc compound.
- an organic alkali metal compound such as organic lithium, an organic magnesium compound, an organic aluminum compound, an organic boron compound, and an organic zinc compound.
- the hydrogenation reaction is carried out usually at a temperature of 0 to 200 ° C, preferably 30 to 150 ° C.
- the pressure of hydrogen used in the hydrogenation reaction is usually from 0.1 to 15 MPa, preferably from 0.2 to 10 MPa, and more preferably from 0.3 to 5 MPa.
- the hydrogenation reaction time is usually from 3 minutes to 10 hours, preferably from 10 minutes to 5 hours.
- the hydrogenation reaction can be used in any of a patch system, a continuous system, or a combination thereof. .
- a solution of the hydrogenated copolymer is obtained.
- the catalyst residue can be removed from the solution of the hydrogenated copolymer as needed, and the hydrogenated copolymer can be separated from the solution.
- An example of a method for separating the solvent is to add a polar solvent such as acetone or alcohol, which is a poor solvent for the hydrogenated copolymer, to the hydrogenated copolymer solution to precipitate the hydrogenated copolymer.
- a method for recovering a method in which a solution of the hydrogenated copolymer is poured into boiling water with stirring, and the solvent is removed by steam stripping to recover the solution; and the solution of the hydrogenated copolymer is heated. And a method of distilling off the solvent.
- the hydrogenated copolymer (A) may contain various phenol-based stabilizers such as a phosphorus-based stabilizer, a zeolite-based stabilizer, and an amine-based stabilizer.
- a modifier having a functional group may be bonded to the hydrogenated copolymer (A) (the hydrogenated copolymer (A) in such a case is hereinafter referred to as “modified hydrogenated copolymer”). United (A) ”).
- Examples of the modifying agent having a functional group include a hydroxyl group and a carboxy group. Carbonyl, carbonyl, thiocarbonyl, acid halide-acid anhydride, carboxylic acid, thiocarboxylic acid, aldehyde, thioaldehyde, carboxylate, amide, sulfonic, sulfonic acid Ester group, phosphate group, phosphate group, amino group, imino group, nitrile group, pyridyl group, quinoline group, epoxy group, thioepoxy group, sulfide group, a Socyanate group, isothiocyanate group, halogenated silicon group, silanol group, alkoxysilane group (preferably 1 to 2'4), phenol, tin chromogen group, alkoxytin group And a primary modifier containing at least one kind of functional group selected from phenyltin groups.
- a hydroxyl group, an epoxy group, an amino group, a silanol group, and an alkoxysilane group are preferred.
- the modified hydrogenated copolymer (A) having a primary modifier is referred to as "primary modified hydrogenated copolymer (A)".
- Japanese Patent Publication No. 4-39495 (corresponding to US Pat. No. 5,115,035) And terminal modifying agents described in WO 03/84664.
- tetraglycidyl xylen diamine tetraglycidyl—1,3—bisaminomethylcyclohexane
- ⁇ force prolactone
- 4 nutoxybenzophenone
- ⁇ I-Glycidoxyshethyl trimethoxysilane ⁇ -Glycidoxybutyl trimethoxysilane
- r Glycidoxypropyl triphenyloxysilane
- N-methylpyrrolidone tetraglycidyl xylen diamine, tetraglycidyl—
- the modifier may include a primary modifier and a secondary modifier attached to the primary modifier.
- the secondary modifier has a functional group reactive with the functional group of the primary modifier.
- a modified hydrogenated copolymer (A) having a modifying agent including a primary modifying agent and a secondary modifying agent bonded to the primary modifying agent is referred to as a “secondarily modified hydrogenated copolymer (A)”.
- Examples of primary modifiers include hydroxyl, propyloxyl, propylonyl, thiocarbyl, acid halide, acid anhydride, carboxylic acid, thiocarboxylic acid, aldehyde, thioaldehyde.
- Preferred examples of the primary modifier include a hydroxyl group and an epoxy group.
- a modifier having at least one functional group selected from the group consisting of an amino group, a silanol group, and an alkoxysilane group (preferably having 1 to 24 carbon atoms) is used.
- No. Examples of the primary modifier having the above functional group include the above-mentioned Japanese Patent Publication No. Hei 4-39495 (corresponding to US Patent No. 5,115,035) and WO03. / 8 4 6 6.
- Preferable examples of the secondary modifier include a lipoxyl group, an acid anhydride group, an isocyanate group, an epoxy group, a silanol group, and an alkoxysilane group (preferably having 1 to 24 carbon atoms).
- the secondary modifier will be described.
- Specific examples of the secondary denaturing agent having a lipoxyl group include maleic acid, oxalic acid succinic acid, adipic acid, azelaic acid, sebacic acid, dodecanedicarboxylic acid, dextranylic acid, and cyclohexane.
- Aliphatic carboxylic acids such as xandicarboxylic acid and cyclopentanedicarboxylic acid, terephthalic acid, isophthalic acid, orthophthalic acid, naphthalenedicarboxylic acid, biphenyldicarboxylic acid, trimesic acid, 'Aromatic carboxylic acids such as melitic acid and pyromellitic acid.
- the secondary modifier having an acid anhydride group include maleic anhydride, itaconic anhydride, pyromellitic anhydride, cis-4-cyclohexane-1,2-dicarboxylic acid Acid anhydride, 1,2,4,5 monobenzenetetracarboxylic dianhydride, 5 — (2,5 — dioxytetrahydroxyfuryl) 1 3 — methyl _ 3 — cyclohexene 1 , 2-dicarboxylic-dicarboxylic anhydride.
- secondary modifier having an isocyanate group examples include tolylene diisocyanate, diphenylmethanediisocyanate, and a polyfunctional aromatic isocyanate.
- the secondary modifying agent having an epoxy group examples include tetraglycidyl 1,3-bisaminomethylcyclohexane, tetradali sidyl m-xylene diamine, diglycidylaniline, ethylene glycol diglycidyl. Propylene glycol diglycidyl and terephthalic acid diglycidyl ester acrylate. Further, the above-mentioned epoxy compounds described as the modifying agent used for obtaining the primary modified hydrogenated copolymer (A) can be mentioned.
- the secondary modifier having a silanol group examples include the alkoxy having 1 to 24 carbon atoms described above as the modifier used to obtain the primary modified hydrogenated copolymer (A).
- examples include hydrolysates of silane compounds.
- a secondary modifier having an alkoxysilane group having 1 to 24 carbon atoms bis- (3-triethoxy) (Siciryl propyl) -tetrasulfan, bis- (3-triethoxysilyl propyl) -disulfane, ethoxysiloxy-san oligomer.
- the above-mentioned silane compounds described as the modifier used for obtaining the primary modified hydrogenated copolymer (A) can be mentioned.
- a particularly preferred secondary modifier is a carboxylic acid having two or more carboxyl groups or an acid anhydride thereof, or an acid anhydride group, an isocyanate group, or the like. It is a secondary modifier having two or more epoxy groups, silanol groups, and alkoxysilane groups having 1 to 24 carbon atoms. Specific examples include maleic anhydride, pyromellitic anhydride, 1,2,4,5-benzentetracarboxylic dianhydride, toluene diisocyanate and tetratetrazide. , 3-Bisaminomethylcyclohexane, Bis (3-triethoxysilyl propyl)-Tetrasulfan.
- the modifier in the modified hydrogenated copolymer as the component (A) has a primary modifier, it is referred to as a “primary modified hydrogenated copolymer” and When the modifier in the copolymer has a primary modifier and a secondary modifier bonded to the primary modifier, it is referred to as "secondarily modified hydrogenated copolymer”.
- the method for producing the primary modified hydrogenated copolymer as the component (A) will be described.
- the primary modified hydrogenated copolymer is obtained by hydrogenating the above base non-hydrogenated copolymer to obtain a hydrogenated copolymer. It can be produced by a method in which a primary modifier is bonded to a copolymer (hereinafter, often referred to as “a method of performing modification after hydrogenation”), or a base non-hydrogenated copolymer.
- a non-hydrogenated copolymer having a primary modifier bound thereto by binding a primary modifier to the polymer, and hydrogenating the obtained primary modifier-bonded non-hydrogenated copolymer hereinafter, referred to as a (Often referred to as "modification before hydrogenation").
- the above base non-hydrogenated copolymer is hydrogenated to obtain a hydrogenated copolymer, and the obtained hydrogenated copolymer is treated with an organic lithium compound.
- Reaction (metallization reaction) of an organic alkali metal compound such as the above a hydrogenated copolymer to which the organic alkali metal is added is obtained, and the obtained organic alkali metal is added.
- a method of obtaining a primary modified hydrogenated copolymer by subjecting a hydrogenated copolymer to an addition reaction with a primary modifier is mentioned.
- a primary modifier is added to the riving terminal of the non-hydrogenated copolymer obtained by the above method using an organic lithium compound as a polymerization catalyst.
- a non-hydrogenated copolymer to which a primary modifier has been bound this is referred to as a “modified non-hydrogenated copolymer”
- the resulting modified non-hydrogenated copolymer is added with silicon.
- a non-hydrogenated copolymer having no riving terminal is reacted with an organic alkali metal compound such as an organic lithium compound (metalation reaction), whereby the non-hydrogenated copolymer having the organic alkali metal attached thereto is heated.
- An organic alkali metal compound such as an organic lithium compound (metalation reaction)
- metal compound such as an organic lithium compound
- a hydrogenated copolymer is obtained, and a primary modifying agent is subjected to an addition reaction, whereby a modified non-hydrogenated copolymer is obtained, and the resulting modified non-hydrogenated copolymer is subjected to a primary reaction by hydrogenation.
- a method of obtaining a modified hydrogenated copolymer is obtained.
- the temperature of the denaturation reaction is preferably 0 to 150 ° (:, more preferably, 20 to 12 °). It is 0 ° C.
- the time required for the transformation reaction varies depending on other conditions, but is preferably within 24 hours, more preferably 0.1 to 10 hours.
- the hydroxyl group, amino group, etc. may be converted into an organic metal salt at the stage of the reaction of the primary modifier, in which case the activity of water, alcohol, etc.
- a compound having hydrogen By treating with a compound having hydrogen, a hydroxyl group or a amino group can be obtained.
- the unmodified copolymer may be mixed in the modified copolymer after the primary modifying agent is reacted with the live end of the base non-hydrogenated copolymer.
- the ratio of the unmodified polymer mixed in the primary modified hydrogenated copolymer is preferably 70% by weight or less, more preferably, based on the weight of the primary modified hydrogenated copolymer. Or less than 60% by weight, more preferably 50% by weight or less.
- the method for producing the secondary modified hydrogenated copolymer will be described.
- the secondary modified hydrogenated copolymer is obtained by reacting the primary modified hydrogenated copolymer obtained by the above method with a secondary modifier.
- the amount of the secondary modifier is usually equivalent to one equivalent of the functional group of the primary modified agent bonded to the primary modified hydrogenated copolymer. It is from 0.3 to 10 mol, preferably from 0.3 to 4 to 5 mol, more preferably from 0.5 to 4 mol.
- the method of reacting the primary modified hydrogenated copolymer with the secondary modifier is not particularly limited, and a known method can be used. For example, a melt kneading method described later and a method of dissolving or dispersing and mixing each component in a solvent or the like and reacting them can be used.
- the solvent is not particularly limited as long as it dissolves or disperses each component.
- Aliphatic hydrocarbon, alicyclic hydrocarbon, aromatic Other than hydrocarbon solvents such as aromatic hydrocarbons, halogen-containing solvents, ester solvents, ether solvents and the like can be used.
- the temperature at which the primary modifying hydrogenated copolymer is reacted with the secondary modifying agent is usually from 110 to 150. C, preferably 30 to 120 ° C.
- the time required for the reaction varies depending on other conditions, but is usually within 3 hours, preferably several seconds to 1 hour.
- a particularly preferred method is manufacturing This is a method of obtaining a secondary modified hydrogenated copolymer by adding a secondary modifier to a solution of the primary modified hydrogenated copolymer thus obtained and reacting. In this case, the solution of the primary modified hydrogenated copolymer may be neutralized before reacting with the secondary modifier.
- the hydrogenated copolymer (unmodified hydrogenated copolymer) as the component (A) is an ⁇ , / 3-unsaturated carboxylic acid or a derivative thereof such as an anhydride, an esterified product, an Can be denatured with a hydride or imidate.
- the 3-unsaturated carboxylic acid or derivative thereof include maleic anhydride, maleic anhydride imide, acrylic acid or an ester thereof, methacrylic acid or an ester thereof, and pendosis-bisic. Mouth [2,2,1] —5-heptene-2,3-dicarboxylic acid or its anhydride.
- the amount of the 3-unsaturated carboxylic acid or derivative thereof is usually from 0.1 to 20 parts by weight, preferably from 0.1 to 10 parts by weight, per 100 parts by weight of the hydrogenated copolymer. Department.
- the reaction temperature for the graft denaturation is preferably from 100 to 300 ° C, and more preferably from 120 to 280 ° C.
- the hydrogenated copolymer (A) is a primary modified hydrogenated copolymer or a secondary modified iced copolymer
- a modifier primary modified hydrogenated
- the functional group of both the primary modifier and the secondary modifier is not only reactive with the polymer (B), the inorganic filler, the polar group-containing additive, etc., but also Because it has a nitrogen atom, an oxygen atom, or a hydroxyl group, the functional group of the denaturant and the polar group of the polymer (B), the inorganic filler, the polar group-containing additive, etc.
- the interaction is effectively expressed by physical affinity such as hydrogen bonding, and the excellent properties of the polymer foam of the present invention are further enhanced.
- the same effect can be obtained when the hydrogenated copolymer (A) is graft-modified as described above.
- the hydrogenated copolymer as the component (A) (including the case of a primary modified hydrogenated copolymer or a secondary modified hydrogenated copolymer) and the hydrogenated copolymer as the component (B)
- the amount of the polymer is 5 to 100 parts by weight and 95 to 0 parts by weight, respectively, based on 100 parts by weight of the total of the component (A) and the component (B).
- the amounts of (A) and component (B) are preferably 5 to 95 parts by weight, 95 to 5 parts by weight, respectively, more preferably 20 to 65 parts by weight, and 80 to 35 parts by weight, respectively. It is.
- the component (A) is a modified hydrogenated copolymer.
- the amount is usually 0.01 to 20 parts by weight, preferably 0.02 to 10 parts by weight, based on 100 parts by weight of the total of the component (A-1) and the component '(B). More preferably 0 It can be 5 to 7 parts by weight.
- the weight ratio of the component (A-1) to the component (B) is preferably from 10 to 90/90, more preferably from 20/80 to 65,3. 5
- the polymer (B) is at least one selected from the group consisting of an olefin polymer other than the hydrogenated copolymer (A) and a rubbery polymer other than the hydrogenated copolymer (A). Both are one kind.
- the off-polymer As the component (B), there is no particular limitation on the off-polymer as the component (B).
- the olefin polymer (B) include polyethylene; a copolymer of ethylene containing 50% by weight or more of ethylene and another monomer copolymerizable therewith, for example, ethylene-propylene copolymer.
- Copolymer ethylene-propylene-butylene copolymer, ethylene-butylene copolymer, ethylene-hexene copolymer, ethylene-octene copolymer, ethylene-vinyl acetate copolymer and its hydrolyzate, ethylene Alcohols having 1 to 24 carbon atoms such as methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, pentyl acrylate, hexyl acrylate, etc.
- Copolymers of acrylic acid esters which are esters of daricidyl alcohol and acrylic acid, ethylene and methyl methacrylate, methyl methacrylate, Data click acrylic acid propyl esters of Metaku Li Le acid heptyl, main Yuku acrylic acid pen Le, Number 1-2 4 alcohol Ruyadari glycidyl alcohol and Metaku Li Le acid carbon in hexyl, etc., to Metaku acrylic acid Copolymers with methacrylates, ethylene-based polymers such as ethylene-acrylic acid ionomers and chlorinated polyethylene; polypropylene; 50 weight-percent of propylene.
- acrylic acid esters which are esters of daricidyl alcohol and acrylic acid, ethylene and methyl methacrylate, methyl methacrylate, Data click acrylic acid propyl esters of Metaku Li Le acid heptyl, main Yuku acrylic acid pen Le, Number 1-2 4 alcohol Ruyadari glycidyl alcohol and Metaku Li Le acid carbon in he
- propylene and another copolymerizable with it such as propylene-ethylene-ethylene copolymer, propylene-ethylene-butylene copolymer, and propylene-butylene copolymer.
- propylene polymers such as chlorinated polypropylene; cyclic olefin polymers such as ethylene-norpolene polymer; and butene polymers.
- ethylene polymers are preferred.
- ethylene-based polymers include polyethylene, ethylene-propylene copolymer, ethylene-propylene-butylene copolymer, ethylenebutylene copolymer, and ethylene-hexene copolymer.
- the above polymers may be used alone or in combination.
- the method for producing the olefin polymer (B) is not particularly limited, and a known method can be used. For example, transition polymerization, radical polymerization, and ion polymerization are mentioned.
- the melt flow rate of the olefin polymer (B) (according to JISK 6758: measured at 230 ° C and a load of 2.16 kg) is preferred. It is preferably from 0.05 to 200 g / 10 minutes, more preferably from 0.1 to 150 g Z10 minutes.
- the olefin polymer (B) may be previously modified with the secondary modifier described above.
- the rubbery polymer as the component (B) is not particularly limited.
- rubbery polymers include conjugated diene polymers such as butadiene rubber and isoprene rubber and hydrogenated products thereof; vinyl aromatic monomer units and conjugated diene monomers such as styrene-butadiene rubber Copolymers composed of units and hydrogenated products thereof; homopolymers composed of vinyl aromatic monomer units, such as styrene-butadiene block copolymers and styrene-isoprene block copolymers A block consisting of a block and a homopolymer block consisting of a conjugated gen monomer unit and a group consisting of a copolymer block consisting of a vinyl aromatic monomer unit and a conjugated gen monomer unit.
- the rubbery polymer described above may be a modified rubber having a functional group.
- the rubbery polymer may be a modified rubber modified with the secondary modifier.
- the weight average molecular weight of the rubbery polymer is usually 30,000 to 100,000, preferably 50,000 to 800,000, and more preferably 70,000 to 500,000. Measure with GPC.
- 1,2-polybutadiene a hydrogenated product of a homogenous homopolymer; a copolymer comprising a vinyl aromatic monomer unit and a conjugated diene monomer unit;
- the hydrogenated product thereof a homopolymer block composed of Bier aromatic monomer units, a homopolymer block composed of conjugated Gen monomer units and a Bier aromatic monomer unit and conjugated Gen.
- the material containing (A) and the component (B) is 100 parts by weight in total. In the polymer foam of the present invention, this material forms the polymer matrix. Below, this material (component (A) or component (A) and component
- the matrix-forming material may contain a thermoplastic resin other than the olefin polymer used as the component (B).
- the amount of the thermoplastic resin is determined by the amount of the component (from the viewpoint of maintaining the flexibility of the polymer-foam).
- A) and ingredients It is usually 1 to 100 parts by weight, preferably 5 to 80 parts by weight, based on 100 parts by weight in total with (B).
- thermoplastic resin other than the olefin polymer examples include the above-mentioned vinyl aromatic monomer and other vinyl monomers (ethylene, propylene, butylene, chloride, etc.) referred to in connection with the component (A).
- Acrylic esters such as vinyl, vinylidene chloride, vinyl acetate, acrylic acid and acrylmethyl, methacrylic esters such as methacrylic acid and methyl methacrylate, acrylonitrile methacrylonitrile Rubber-modified styrene resin (HIPS); acrylonitrile-butadiene-styrene copolymer resin (ABS); methacrylate-butene-styrene copolymer resin (MBS).
- HIPS acrylonitrile-butadiene-styrene copolymer resin
- ABS methacrylate-butene-styrene copolymer resin
- thermoplastic resins include polyvinyl chloride, polyvinylidene chloride, polyvinyl chloride-based resin, polyvinyl acetate-based resin and its hydrolyzate, acrylic acid and its ester polyamide.
- Polymer, methacrylic acid and its ester or amide polymer, polyacrylate resin, acrylonitrile homopolymer, methacrylonitrile homopolymer, acrylonitrile lubricant Rilonitrile copolymer is exemplified.
- it is a ditolyl resin which is a copolymer of the above-mentioned acrylonitrile-based monomer and another copolymerizable monomer, and is an acrylonitrile-based monomer.
- thermoplastics include Nylon-46, Nylon-6, Nylon-66, Nylon-610, Nylon-11, Nylon-12, Nylon-12 Polyamide-based resin such as lon-6 nylon-12 copolymer, polyester-based resin, thermoplastic polyurethane-based resin, poly-1,4'-dioxydiphenyl -2,2 ' —Polycarbonate polymers such as propane force, thermoplastic polysulfones such as polyethersulfone and polyarylsulfone, polyoxymethylene resins, poly (2,6-dimethyl-1,4—phenylene) ether Such as polyphenylene ether resin, polyphenylene sulfide poly4,4 'diphenylene sulfide, etc., polyphenylene sulfide resin, polyarylate resin, polyether Polybutadiene resins such as alkene polymers or copolymers, polyketone resins,
- thermoplastic resins Two or more of the above thermoplastic resins may be used in combination.
- thermoplastic resin is preliminarily modified with a secondary modifier.
- the number average molecular weight of the thermoplastic resin is usually 100,000 or more, preferably 500,000 to 500,000, more preferably 10,000 to 100,000.
- the number average molecular weight of the thermoplastic resin is measured by GPC.
- the matrix forming material is soft to improve its additivity.
- An agent may be contained.
- Mineral oils or liquids or low molecular weight synthetic softeners are suitable as softeners.
- a mineral oil-based rubber softener called a process oil or an extender oil used for softening, increasing the volume of a rubber, and improving processability is a mixture of an aromatic ring, a naphthene ring, and a paraffin chain. In this mixture, those having 50% or more of the carbon number of the paraffin chain in the total carbon are called paraffinic, those having a naphthene ring carbon number of 30 to 45% are called naphthenic, Aromatic substances with more than 3.0% carbon atoms are called aromatic.
- the mineral oil-based rubber softener is preferably at least one selected from the group consisting of a naphthene-based softener and a paraffin-based softener.
- polybutene polybutene, low molecular weight polybutadiene, liquid paraffin and the like can be used, and the above-mentioned softener for mineral oil-based rubber is preferable.
- the amount of the softener is usually 0 to 0.20 parts by weight, preferably 0 to 100 parts by weight, based on 100 parts by weight of the hydrogenated copolymer (A).
- the material for forming a mixture may contain an additive.
- the type of the additive is not particularly limited as long as it is generally used for blending a thermoplastic resin or a rubber-like polymer.
- silica, talc, myriki, calcium silicate, hydrated talcite, kaolin, diatomaceous earth, graphite, calcium carbonate, magnesium carbonate, magnesium hydroxide, aluminum hydroxide, calcium sulfate, Inorganic fillers such as barium sulfate Organic fillers such as bonbon black are examples.
- additives include lubricants such as stearic acid, behenic acid, zinc stearate, calcium stearate, magnesium stearate, ethylene bisstea amide, etc. Release agents, plasticizers such as organopolysiloxanes and mineral oils, antioxidants for hindered phenols, antioxidants such as phosphorus-based, sulfur-based and amide-based heat stabilizers, Hindered amine light stabilizer, benzotriazole ultraviolet absorber, flame retardant, antistatic, organic fiber, glass fiber, carbon fiber, metal whisker, etc.Titanium oxide, oxidation Coloring agents such as iron and power pump paints, and others described in “Rubber / Plastic Compounding Chemicals” (edited by Rubber Diest, Japan).
- the specific gravity of the polymer foam of the present invention is from 0.05 to 0.5, preferably from 0.1 to 0.3. Since the polymer foam of the present invention has a specific gravity in the range of 0.05 to 0.5, it has excellent mechanical properties such as tensile strength and tear strength, is lightweight, and is economically economical. Is also excellent. The specific gravity of the polymer foam is measured using an automatic specific gravity measuring device.
- the specific gravity of the polymer foam can be adjusted by the type and amount of a crosslinking agent or a crosslinking accelerator, which will be described later, and the crosslinking conditions (temperature, time, etc.) used for production.
- the polymer foam of the present invention is excellent in flexibility, low-temperature properties (such as low-temperature flexibility), shock absorption (low rebound resilience), compression set resistance, and the like. ) Can be used.
- the method for producing the polymer foam of the invention is not particularly limited. Basically, the polymer foam of the present invention is obtained by adding a foaming agent to a matrix-forming material, foaming the matrix-forming material, and thereby forming the polymer matrix. It is possible to obtain a polymer foam in which bubbles are distributed in the mixture.
- blowing agents include chemical blowing agents and physical blowing agents.
- a chemical blowing agent when used, it can be produced, for example, by a method including the following three steps. (1) Provide a matrix forming material,
- a chemical foaming agent is added to the provided matrix forming material and kneaded, thereby obtaining a foamable material
- the foamable material obtained in the step (2) is foamed, thereby obtaining a polymer foam.
- a method for providing a matrix-forming material is not particularly limited.
- a matrix-forming material obtained by putting each component of the matrix-forming material into a kneading machine and melt-kneading the components can be used.
- kneading machines Roll kneading machine (two-roll open mill), Banno mixer, kneader, kneader, single screw extruder, twin screw extruder, multi screw extruder
- a general pulverizer such as a rew extruder can be used.
- a melt-kneading method using an extruder is preferred from the viewpoint of productivity and good kneading.
- the kneading temperature is usually from 80.degree. To 250.degree. C., preferably from 100.degree.
- the kneading time is usually 4 to 80 minutes, preferably 8 to 40 minutes.After dissolving or dispersing and mixing each component of the matrix forming material, a method of heating and removing the solvent is used. You may.
- a foaming agent and, if desired, a crosslinking agent and a crosslinking assistant are added to the matrix-forming material and kneaded, whereby a foamable material is obtained by fc.
- a foaming agent and, if desired, a crosslinking agent and a crosslinking assistant are added to the matrix-forming material and kneaded, whereby a foamable material is obtained by fc.
- the kneader any of the kneaders listed in the step (1) may be used.
- the kneading temperature is Usually 60 to 200. (: Preferably 80 to 150 ° C.
- the kneading time is usually 3 to 60 minutes, preferably 6 to 30 minutes. When a crosslinking agent is used, the crosslinking reaction becomes excessive.
- the kneading must be performed at a temperature that does not proceed
- the temperature at which the crosslinking reaction does not proceed excessively depends on the type of crosslinking agent, but for example, in the case of dicumyl peroxide, 80 to 130 ° C It is necessary to perform kneading at
- the kneading machine used in the step (1) may be subsequently used in the step (2) for kneading.
- an inorganic chemical foaming agent As the chemical foaming agent added in the step (2), an inorganic chemical foaming agent, an organic chemical foaming agent, or the like can be used.
- inorganic chemical blowing agents include sodium bicarbonate, ammonium carbonate, ammonium bicarbonate, ammonium nitrite, azide compound, sodium borohydride, and metal powder. it can..
- organic chemical blowing agents examples include azodicarbonamide azobisformamide, azobisisopyronitrile, barium azodicarboxylate, diazoaminoazobenzene, N, N 'dinitrotosopentamethylene Tramin, N, N, — dinitrosone N, N'-dimethyl terephthalamide, benzene diphonyl hydrazide, p — toluene sulfonyl hydrazide
- P, p '— oxybis (benzenesulfonyl hydrazide), P-toluenesulfonyl semicarbazide can be mentioned.
- the above chemical blowing agents may be used in combination.
- the compounding amount of the chemical foaming agent is usually 0.1 to 10 parts by weight, preferably 0.3 to 100 parts by weight based on 100 parts by weight of the components (A) and (B).
- the amount is 8 parts by weight, more preferably 0.5 to 6 parts by weight, particularly preferably 1 to 5 parts by weight.
- step (2) if desired, a crosslinking agent (vulcanizing agent) can be added.
- crosslinking vulcanization
- step (3) if desired, crosslinking (vulcanization) is performed simultaneously with foaming in the step (3) described later.
- crosslinking agent examples include radical generators such as organic peroxides and azo compounds, oxime compounds, nitroso compounds, polyamine compounds, sulfur, and sulfur compounds.
- Sulfur compounds include sulfur monochloride, sulfur dichloride, disulfide compounds, polymeric polysulfur compounds, and the like.
- the amount of the crosslinking agent to be used is usually 0.01 to 20 parts by weight, preferably 0.1 to 15 parts by weight, per 100 parts by weight of the total of the component (A) and the component (.B). Parts by weight, more preferably 0.5 to 10 parts by weight.
- the amount of the crosslinking agent used is preferably from 08 to 1 part by weight based on 100 parts by weight of the total amount of the component (A) and the component (B). 0 parts by weight, more preferably 1 to 8 parts by weight.
- organic peroxides include dicumylperoxide, di-tert-butylperoxide, and benzoylperoxide.
- dicumylperoxide 2,5-dimethyl-2,5-di (tert-butylperoxy) hexane, 2,5-monodimethyl25-di- tert-Butylperoxy) hexine-3,13-Bis (tert-butylperoxyiisopropyl) benzene, 1,1—Bis (tert-butylperoxy) 13,3,51 Trimethylcyclyl methyl sulfide Rohexane, n-butyl-4,4-bis (tert-butylperoxy) valerate, di-tert-butylperoxide and the like are preferred.
- Peroxy crosslinking aids such as maleimide, divinyl benzene, triaryl cyanide Multifunctional acrylic monomer, such as a plate, a tri-ray relay, a butylene glycol acrylate, a diethylene glycol diacrylate, a metal acrylate, etc., butylene glycol Cole meth acrylate, ethyl render cry meth acrylate, diethylene glycol cre acrylate, po (Ethylene glycol elimination, trimethyl lip opening) Trimethacrylate, aryl methacrylate Polyfunctional methacrylate monomers such as relay and metal methacrylate, and polyfunctional vinyl monomers such as vinyl butyrate and vinyl stearate can be used in combination.
- the amount of the crosslinking assistant (crosslinking accelerator) to be used is usually 0.01 to 20 parts by weight, preferably 0.1 to 100 parts by weight of the total amount of the components (A) and (B). It is preferably from 0.5 to 15 parts by weight, more preferably from 0.1 to 10 parts by weight. In particular, when the polymer foam of the present invention is used as an impact absorbing material, the amount of the crosslinking aid (crosslinking accelerator) used is preferably about 0.1 to 5 parts by weight.
- crosslinking assistants crosslinking assistants
- G crosslinking aid bridge accelerator
- Zinc white flower and stearic acid can also be used as a crosslinking assistant (crosslinking accelerator).
- the foamable material obtained in the step (2) is foamed. To obtain a polymer foam.
- the foaming method is not particularly limited.
- a polymer foam can be obtained by introducing a foamable material into a compression molding machine, a mouth mill, a force render roll, an extruder, an injection molding machine, and foaming.
- the case where a compression molding machine is used will be described.
- the foamable material obtained in the step 2) is charged into a compression molding machine, and the temperature is 100 to 220. (:, 120-200.C, pressure 50-250 kgf Z
- the compression molding is performed in cm 2 , preferably 100 to 200 kgf Z cm 2 , for a time of 4 to 80 minutes, preferably 8 to 40 minutes. After 5 to 60 minutes, cool to room temperature while maintaining the pressure. Thereafter, foaming is performed by releasing the pressure to obtain a polymer foam.
- Polymer foams are obtained in the form of molded articles of various shapes such as sheets.
- a crosslinking agent is used together with the foaming agent in step (2), crosslinking is performed simultaneously with foaming in step (3), and the polymer foam is obtained as a crosslinked foam.
- a cross-linked foam increases the strength even further.
- a physical foaming agent When a physical foaming agent is used, it can be produced, for example, by a method including the following three steps.
- a physical foaming agent is added to the provided matrix-forming material and melt-kneaded under pressure, thereby obtaining a foamable material.
- the foamable material obtained in the step (2) is foamed by placing it under atmospheric pressure, thereby obtaining a polymer foam.
- the method of providing the matrix-forming material in the step (1) is the same as in the case of the above-described production method using a chemical blowing agent.
- Steps (2) and (3) will be described using an extrusion foaming process as an example.
- step (2) Conclusions Li box forming temperature 1 0 in the extruder together with the blowing agent material 0 - kneaded at 2 0 0 ° C ⁇ pressure 1 0 ⁇ 1 0 0 kgf Z cm 2 Thereby, the foaming agent is dispersed / dissolved in the matrix forming material to obtain a foamable material.
- the foamable material is extruded into the atmosphere through a die attached to the end of the extruder to cause foaming, thereby obtaining a polymer foam.
- foaming is achieved by the expansion force of a physical blowing agent.
- Examples of physical blowing agents include hydrocarbons such as pentane, butane, and hexane; halogenated hydrocarbons such as methyl chloride and methylene chloride; gases such as nitrogen and air; trichlorofluoromethane; and dichloromethane. Fluorinated hydrocarbons such as dichlorofluoromethane, trichlorotrifluorofurethane, chlorofluorofluoroethane and hydrofluorocarbon can be exemplified.
- the physical foaming agent is added in an amount of usually 0.1 to 8 parts by weight, preferably 0.2 to 6 parts by weight, based on 10'0 parts by weight of the components (A) and (B). Parts by weight, more preferably 0.3 to 4 parts by weight.
- step (3) if desired, a crosslinking agent (vulcanizing agent) can be added.
- crosslinking vulcanization
- Crosslinker species The amount is the same as in the method using the chemical blowing agent described above. .
- the content of the styrene monomer unit relative to the hydrogenated copolymer was determined using an unspecified copolymer as the sample and an ultraviolet spectrophotometer (apparatus name: UV-2450; manufactured by Shimadzu Corporation, Japan). ) was measured.
- the content of styrene monomer units relative to the hydrogenated copolymer was determined as the content of styrene monomer units relative to the base non-hydrogenated copolymer.
- the styrene polymer block content of the copolymer before hydrogenation was determined by the osmium tetroxide decomposition method described in IM Kolthoff, eta and J. Polym. Sci. 1, 429 (1946). Was measured. A 0.1 g / 125 m 1 tertiary butanol solution of osmic acid was used for decomposition of the copolymer before hydrogenation.
- the hydrogenation rate was measured by a nuclear magnetic resonance apparatus (apparatus name: DPX-400; manufactured by BRUKER, Germany).
- the weight average molecular weight and the number average molecular weight were measured by GPC using a calibration curve obtained from a commercially available standard monodisperse polystyrene having a known molecular weight using the copolymer before hydrogenation as a sample. The measurement was carried out at a temperature of 35 ° C using a GPC apparatus (manufactured by Waters, USA), using tetrahydrofuran as a solvent.
- the molecular weight distribution is the ratio (Mw / Mn) of the obtained weight average molecular weight (Mw) to the number average molecular weight (Mn).
- the modified copolymer has the property of adsorbing on silica gel columns but not adsorbing on polystyrene gel columns. Using this property, the denaturation rate is measured as follows. Regarding the sample solution containing the sample '(modified copolymer) and the low-molecular-weight internal standard polystyrene, the same standard and semi- GPC of polystyrene gel (trade name: Shode X; manufactured by Showa Denko, Japan) and GPC of silica column GPC (Zorbax, manufactured by Dupont, USA) are performed, and both chromatograms are measured. From these differences, the amount of adsorption to silica column was measured to determine the denaturation rate.
- the measurement frequency obtained by measuring the viscosity spectrum using a viscosity measurement analyzer is 10 Hz.
- the measurement was carried out using a DSC (instrument name: DSC320S; manufactured by Mac Science, Japan).
- the temperature was raised from room temperature to 150 ° C at a rate of 30 ° C, then lowered to 110 ° C at a rate of 10 ° C, and the crystallization curve was measured. The presence or absence of a crystallization peak was confirmed. When there was a crystallization peak, the temperature at which the peak appeared was defined as the crystallization peak temperature, and the crystallization peak calorie was measured.
- the hardness of the foam was measured using an Asker C type durometer-one hardness tester (manufactured by Kobunshi Keiki Co., Ltd., Japan) in accordance with ASTM—D224. The measurement was performed at 22 ° C and 110 ° C. It was determined that the smaller the value of hardness at 22 ° C, the better the flexibility. Also, it was judged that the lower the value of the hardness at 110 ° C, the better the low-temperature characteristics.
- test piece was manufactured from a foam having a thickness of 3 mm using a dumbbell cutout (No. 2) and measured according to ASTM D-412.
- the resilience of the polymer foam was measured as follows. Place a test piece of foam with a thickness in the range of 15 to 17 mm on a flat table, 22. In C, drop a steel ball (16.3 g) onto the test piece, and measure the drop height of the ball and the height at which the ball rebounds.
- a reaction vessel purged with nitrogen was charged with 1 liter of dried and purified cyclohexane, and 100 millimoles of bis ( 5- cyclopentene genil) thiomidine chloride was added. While sufficiently stirring the mixture in the reaction vessel, an n-hexane solution containing 200 ml of trimethylaluminum was added, and reacted at room temperature for about 3 days to obtain a hydrogenation catalyst containing titanium. I got
- n-butyllithium is added to the weight of all monomers (total amount of butadiene monomer and styrene monomer charged into the reactor). 0.08% by weight of N, N, N ', N'-tetramethylethylenediamine (hereinafter referred to as TMEDA) was added in an amount of 0.4 mol per mol of n-butyllithium.
- TMEDA N, N, N ', N'-tetramethylethylenediamine
- a cyclohexane solution (monomer concentration: 22% by weight) containing 48 parts by weight of butadiene and 36 parts by weight of styrene was continuously supplied to the reactor at a constant rate over a period of 60 minutes.
- the reaction was carried out (first stage polymerization). During this time, the reactor internal temperature was adjusted to about 70 ° C.
- a cyclohexane solution (monomer concentration: 22% by weight) containing 8 parts by weight of styrene as a monomer was added over a period of about 3 minutes, and the temperature inside the reactor was adjusted to about 70 for 30 minutes.
- An interpolymerization reaction was carried out (third stage polymerization) to obtain a non-hydrogenated copolymer.
- the styrene monomer unit content of the obtained non-hydrogenated copolymer was 52% by weight, and styrene
- the content of polymer block is 16 layers %
- the vinyl bond content of the butadiene portion was 20% by weight
- the weight average molecular weight was 150,000
- the molecular weight distribution was 1.1.
- the above hydrogenation catalyst ⁇ was added in an amount of 100 ppm by weight as titanium based on the weight of the non-hydrogenated copolymer, and a hydrogen pressure of 0.7 MPa, The hydrogenation reaction was carried out at a temperature of 65 ° C. After the reaction was completed, methanol was added in an amount of 0.1% by weight based on the weight of the non-hydrogenated copolymer, and then octadecyl-3— (35—Gt) was used as a stabilizer. —Butyl-4—hydroxyphenyl) propionate was added in an amount of 0.3% by weight based on the weight of the non-hydrogenated copolymer to obtain a hydrogenated copolymer (hereinafter referred to as polymer 1).
- polymer 1 hydrogenated copolymer
- the hydrogenation rate of Polymer 11 was 99%. Also, as a result of the dynamic viscoelasticity measurement, the peak temperature of t an ⁇ was at ⁇ 15 ° C. 'Also, as a result of the DSC measurement, substantially no crystallization peak caused by the styrene-butadiene copolymer block was found in the range of -50 to: L00 ° C.
- a non-hydrogenated copolymer was obtained in the same manner as in Polymer 11, except that the amounts of n-butyllithium and monomer supplied to the reactor were changed as follows: n-butyllithium supply 0.07% by weight, styrene to be supplied to the first stage to 6 parts by weight, butadiene to be supplied to the second stage: 54 parts by weight, styrene to 34 parts by weight, and third stage To 6 parts by weight of styrene
- the obtained non-hydrogenated copolymer had a styrene monomer unit content of 46% by weight, a styrene polymer block content of 12% by weight, and a butadiene portion having a pinyl bond amount of 2% by weight.
- the weight-average molecular weight was 26.5%, and the molecular weight distribution was 1.1.
- the hydrogenation rate of Polymer 12 was 98%.
- the peak temperature of t an ⁇ was at ⁇ 25 ° C.
- a crystallization peak due to the styrenebutadiene copolymer block was not substantially present in the range of 150 to 100 ° C.
- the hydrogenation rate of Polymer 13 was 99%. Also, as a result of the dynamic viscoelasticity measurement, the peak temperature of t an ⁇ was at ⁇ 15 ° C. Further, as a result of the DSC measurement, there was substantially no crystallization peak attributable to the styrenebutadiene copolymer block in the range of 150 to 10Ot. Guru polymer 4>
- Polymer 3 was mixed with 2.1 moles of maleic anhydride per equivalent of the functional group binding to the polymer, and the mixture was extruded at 310 ° C with a twin screw extruder at 310 ° C.
- the polymer 14 obtained by melt-kneading at a rotational speed of 100 rpm for about 2 minutes to obtain a secondary modified hydrogenated copolymer (polymer 4) was subjected to dynamic viscoelasticity measurement.
- the peak temperature for tan ⁇ 5 was at 115 ° C. Further, as a result of the DSC measurement, a crystallization peak due to the styrene-butadiene copolymer block was not substantially present in the range of 50 to 0.10 ° C.
- a non-hydrogenated copolymer was produced by continuous polymerization as shown in k, using two tank-type reactors with a stirring device and a jacket having an internal volume of 10 liters.
- n-Butyllithium was adjusted to a concentration such that the amount of n-butyllithium was 0.0 to 7 parts by weight.
- a 2.0-liter / h 1- hexane solution of n-butyllithium was added to the first reactor.
- the cyclohexane solution of TMEDA was supplied at a supply rate of 0.44 mol per mol of n-butyllithium, and the polymerization was continuously carried out at 90 :.
- the reaction temperature was adjusted with the jacket temperature.
- the temperature near the bottom of the reactor was about 88 ° C, and the temperature near the top of the reactor was about 90 ° C.
- the average residence time in the polymerization reactor was about 45 minutes, butadiene conversion was approximately 100%, and styrene conversion was 99%.
- the polymer solution from the first unit is supplied to the bottom of the second unit, and at the same time, a cyclohexane solution having a styrene concentration of 24% by weight is supplied at 2.38 liters / hr.
- the mixture was supplied to the bottom of the second unit at a constant speed, and was continuously polymerized at 90 ° C. to obtain a non-hydrogenated copolymer.
- the conversion of styrene at the second outlet was 98%.
- the styrene monomer content was 67% by weight
- the styrene polymer block content was 20% by weight
- the vinyl bond in the butadiene portion was The amount was 14% by weight
- the weight average molecular weight was 200,000
- the molecular weight distribution was 1.9.
- the above-mentioned hydrogenation catalyst I was added in an amount of 100 ppm by weight of titanium based on the weight of the non-hydrogenated copolymer, and a hydrogen pressure of 0.7 MPa and a temperature of 65 A hydrogenation reaction was performed at ° C.
- the hydrogenation rate of the rubber-like child united 1 was 99%. Further, as a result of the viscoelasticity measurement, the peak of ta ⁇ ⁇ was present at 10 ° C. In addition, as a result of the DSC measurement, a crystallization peak due to the styrene / benzene copolymer block was not substantially present in the range of 150 to 100 ° C.
- Example 1
- first kneaded material 70 parts by weight of polymer 1 as a hydrogenated copolymer, 30 parts by weight of rubbery polymer 1 as a rubbery polymer, and the type and amount shown in column 1 of Table 1
- a kneader equipment name: DJK-1; manufactured by Dae-Jung Precision Machinery Co., Korea
- DJK-1 manufactured by Dae-Jung Precision Machinery Co., Korea
- a kneading temperature of about 120 ° C
- kneading time 15
- Second kneaded material A kneaded material (hereinafter, referred to as "second kneaded material") was obtained.
- the second kneaded material was heated at a temperature of 160 ° C and a pressure of 150 kgf Zcm 2 For 20 minutes. After the passage of 20 minutes, the temperature was cooled to room temperature while maintaining the pressure of 150 kgf / cm 2 . Thereafter, the pressure was released to obtain a polymer foam.
- Example 2 The properties of the obtained polymer foam are shown in Table 1. As can be seen from Table 1, this polymer foam was excellent in flexibility, low-temperature properties, compression set resistance, and impact absorption (low resilience). Example 2.
- a polymer foam was obtained in the same manner as in Example 1 except that the kinds and amounts of the polymer additives shown in Table 1 were used.
- Example 3 The properties of the obtained polymer foam are shown in Table 1. As can be seen from Table 1, this polymer foam was excellent in flexibility, low-temperature properties, compression set resistance, and impact absorption (low rebound resilience). Example 3
- a polymer foam was obtained in the same manner as in Example 1 except that the types and amounts of the polymers and additives shown in Table 1 were used.
- Example 4 The properties of the obtained polymer foam are shown in Table 1. As can be seen from Table 1, this polymer foam was excellent in flexibility, low-temperature properties, compression set resistance, and shock absorption (low rebound). Example 4
- a polymer foam was obtained in the same manner as in Example 1 except that the types and amounts of the polymers and additives shown in Table 1 were used.
- Example 5 The properties of the obtained polymer foam are shown in Table 1. As can be seen from Table 1, this polymer foam was excellent in flexibility, low-temperature properties, compression set resistance, and shock absorption (low rebound). Example 5
- a polymer foam was obtained in the same manner as in Example 1 except that the type and amount of the polymer additive shown in Table 1 were used.
- Example 6 The properties of the obtained polymer foam are shown in Table 1. As can be seen from Table 1, this polymer foam was excellent in flexibility, low-temperature properties, compression set resistance, and impact absorption (low resilience). Example 6
- polymer 1 35 parts by weight of polymer 1 as a hydrogenated copolymer, and ethylene-vinyl acetate copolymer as a copolymer (trade name: EVA 460 (vinyl acetate monomer content: 18 parts by weight) %); 30 parts by weight of Dupont, USA, and a hydrogenated product of a styrene-isoprene block copolymer as a rubbery polymer (trade name: High Blur 712; Kuraray, Japan)
- a polymer foam was obtained in the same manner as in Example 1 except that 35 parts by weight of
- a polymer foam was obtained in the same manner as in Example 1 except that polymer 13 was used instead of polymer 11 as the hydrogenated copolymer.
- Example 8 A polymer foam was obtained in the same manner as in Example 1 except that polymer 4 was used instead of polymer 1 as the hydrogenated copolymer.
- a polymer foam was obtained in the same manner as in Example 1 except that the types and amounts of the polymers and additives shown in Table 1 were used.
- the polymer foam of the present invention is excellent in flexibility, low-temperature properties (such as low-temperature flexibility), shock absorption (low rebound resilience), and compression set resistance.
- Materials for footwear such as mitsole), home appliance materials (shock absorbers and shock absorbers for rotating equipment), automotive parts materials (vibration shock absorbers, vibration and sound insulation materials, etc.), and cushions for general packaging Can be used advantageously as a material
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- General Chemical & Material Sciences (AREA)
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/549,618 US20060205890A1 (en) | 2003-04-10 | 2004-04-09 | Polymer foam containing hydrogenated copolymer |
JP2005505322A JP5153071B2 (ja) | 2003-04-10 | 2004-04-09 | 水添共重合体を含有するポリマー発泡体 |
DE200411000558 DE112004000558B4 (de) | 2003-04-10 | 2004-04-09 | Polymerschaum, der ein hydriertes Copolymer enthält, und Verwendung eines Materials zur Herstellung eines Polymerschaums |
HK06112126A HK1091504A1 (en) | 2003-04-10 | 2006-11-03 | Polymer foam containing hydrogenated copolymer |
Applications Claiming Priority (6)
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JP2003106807 | 2003-04-10 | ||
JP2003-106807 | 2003-04-10 | ||
JP2003-162253 | 2003-06-06 | ||
JP2003162253 | 2003-06-06 | ||
JP2003162252 | 2003-06-06 | ||
JP2003-162252 | 2003-06-06 |
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WO2004090028A1 true WO2004090028A1 (ja) | 2004-10-21 |
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PCT/JP2004/005114 WO2004090028A1 (ja) | 2003-04-10 | 2004-04-09 | 水添共重合体を含有するポリマー発泡体 |
Country Status (6)
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US (1) | US20060205890A1 (ja) |
JP (1) | JP5153071B2 (ja) |
KR (1) | KR100642705B1 (ja) |
DE (1) | DE112004000558B4 (ja) |
HK (1) | HK1091504A1 (ja) |
WO (1) | WO2004090028A1 (ja) |
Cited By (4)
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CN100406509C (zh) * | 2003-11-28 | 2008-07-30 | 住友橡胶工业株式会社 | 轮胎用橡胶组合物以及使用该橡胶组合物的轮胎 |
WO2013179455A1 (ja) * | 2012-05-31 | 2013-12-05 | 株式会社アシックス | 発泡成形品、発泡ソール、及びシューズ |
JP2019031661A (ja) * | 2017-07-21 | 2019-02-28 | ティエスアールシー・コーポレイションTSRC Corporation | 発泡体を調製する組成物、発泡体、およびその発泡体を用いた靴 |
US10645994B2 (en) | 2006-05-26 | 2020-05-12 | Nike, Inc. | Article of footwear with lightweight sole assembly |
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US20050282921A1 (en) * | 2004-06-18 | 2005-12-22 | Ford Global Technologies, Llc | Automotive grade, flexible polyurethane foam and method for making the same |
US20070123597A1 (en) * | 2005-11-29 | 2007-05-31 | Ford Global Technologies, Llc | Encapsulated flexible polyurethane foam and method for making polyol to form foam |
KR101006613B1 (ko) * | 2006-02-13 | 2011-01-07 | 아사히 가세이 케미칼즈 가부시키가이샤 | 수소 첨가 블록 공중합체, 상기 수소 첨가 블록 공중합체 함유 수지 조성물, 이들의 가교체 및 가교 발포체 |
DE102007047301B4 (de) | 2007-10-02 | 2022-01-13 | Dreve Prodimed Gmbh | Verwendung eines elastomeren Einkomponentenmaterials |
ES2618779T3 (es) * | 2008-12-10 | 2017-06-22 | Asahi Kasei Kabushiki Kaisha | Composición de polímero termoplástico |
JP5712134B2 (ja) * | 2009-09-30 | 2015-05-07 | 株式会社クラレ | 発泡成形体からなる容器用栓 |
JP6255143B1 (ja) * | 2016-05-18 | 2017-12-27 | 株式会社クラレ | ダムラバー、ダムラバーとパネルの複合体 |
JP7217744B2 (ja) * | 2018-05-08 | 2023-02-03 | 株式会社ブリヂストン | 加硫ゴム組成物、タイヤトレッド及びタイヤ |
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- 2004-04-09 DE DE200411000558 patent/DE112004000558B4/de not_active Expired - Fee Related
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DE112004000558T5 (de) | 2006-03-23 |
HK1091504A1 (en) | 2007-01-19 |
KR100642705B1 (ko) | 2006-11-13 |
JPWO2004090028A1 (ja) | 2006-07-06 |
JP5153071B2 (ja) | 2013-02-27 |
US20060205890A1 (en) | 2006-09-14 |
KR20050121249A (ko) | 2005-12-26 |
DE112004000558B4 (de) | 2012-08-30 |
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